30705920774 has 4 divisors (see below), whose sum is σ = 46058881164. Its totient is φ = 15352960386.

The previous prime is 30705920719. The next prime is 30705920797. The reversal of 30705920774 is 47702950703.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7676480192 + ... + 7676480195.

It is an arithmetic number, because the mean of its divisors is an integer number (11514720291).

Almost surely, 2^30705920774 is an apocalyptic number.

30705920774 is a deficient number, since it is larger than the sum of its proper divisors (15352960390).

30705920774 is a wasteful number, since it uses less digits than its factorization.

30705920774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15352960389.

The product of its (nonzero) digits is 370440, while the sum is 44.

The spelling of 30705920774 in words is "thirty billion, seven hundred five million, nine hundred twenty thousand, seven hundred seventy-four".